Operator`s manual

Installation and Operator’s Manual Page 61 of 62
(PVI-2000-OUTD-UK
Rev: 1.0)
8.5 Power Derating
To ensure inverter safe operation under any temperature and electrical condition,
the unit will automatically derate the power to be delivered to the grid.
Power derating can occur on one of the two following occasions:
Power Derating due to Ambient Temperature
AURORA is equipped with an integral high reliability cooling fan with automatic
control of the rotational speed to ensure that the components are always run well-
within their operating temperature limits.
Under severe operating conditions (when ambient temperature is very high) even
with integral fan at maximum speed the unit may start to derate the output power.
Several environmental factors can influence the operating temperature of the unit,
such as ambient air temperature, airflow, exposure to sun radiation, input voltage
and power, orientation of the heatsink fins, etc.
AURORA is able to supply the maximum rated output power (i.e. 2.000W) with
ambient temperatures up to 40°C, in case the unit is not directly exposed to solar
radiation or heat sources that may cause a further increase of the internal
temperature.
Power Derating due to Input Voltage
The graph shows the automatic derating of delivered power when input voltage
values are too high or too low.